COMPMID-485: Offset-based memory manager support.

Adds support for offset-based memory mappings used from CPU system
memory and SVM based allocations.

Change-Id: Ibee6a3c02a61df9b11fe8878cfe40dc6fd9a4be0
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/88307
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

1 files changed, 103 insertions, 0 deletions

diff --git a/src/runtime/ISimpleLifetimeManager.cpp b/src/runtime/ISimpleLifetimeManager.cpp
new file mode 100644
index 0000000000..2c64475b39
--- /dev/null
+++ b/src/runtime/ISimpleLifetimeManager.cpp
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/runtime/ISimpleLifetimeManager.h"
+
+#include "arm_compute/core/Error.h"
+#include "arm_compute/runtime/IAllocator.h"
+#include "arm_compute/runtime/IMemoryGroup.h"
+#include "arm_compute/runtime/IMemoryPool.h"
+#include "support/ToolchainSupport.h"
+
+#include <algorithm>
+#include <cmath>
+#include <map>
+#include <vector>
+
+using namespace arm_compute;
+
+ISimpleLifetimeManager::ISimpleLifetimeManager()
+    : _active_group(nullptr), _active_elements(), _finalized_groups()
+{
+}
+
+void ISimpleLifetimeManager::register_group(IMemoryGroup *group)
+{
+    if(_active_group == nullptr)
+    {
+        ARM_COMPUTE_ERROR_ON(group == nullptr);
+        _active_group = group;
+    }
+}
+
+void ISimpleLifetimeManager::start_lifetime(void *obj)
+{
+    ARM_COMPUTE_ERROR_ON(obj == nullptr);
+    ARM_COMPUTE_ERROR_ON_MSG(std::find_if(std::begin(_active_elements), std::end(_active_elements), [&obj](const Element & e)
+    {
+        return obj == e.id;
+    }) != std::end(_active_elements),
+    "Memory object is already registered!");
+
+    // Insert object in groups and mark its finalized state to false
+    _active_elements.emplace_back(obj);
+}
+
+void ISimpleLifetimeManager::end_lifetime(void *obj, void **handle, size_t size)
+{
+    ARM_COMPUTE_ERROR_ON(obj == nullptr);
+
+    // Find object
+    auto it = std::find_if(std::begin(_active_elements), std::end(_active_elements), [&obj](const Element & e)
+    {
+        return obj == e.id;
+    });
+    ARM_COMPUTE_ERROR_ON(it == std::end(_active_elements));
+
+    // Update object fields and mark object as complete
+    it->handle = handle;
+    it->size   = size;
+    it->status = true;
+
+    // Check if all object are finalized and reset active group
+    if(are_all_finalized())
+    {
+        // Update finalized groups
+        _finalized_groups[_active_group].insert(std::end(_finalized_groups[_active_group]), std::begin(_active_elements), std::end(_active_elements));
+
+        // Update blobs and group mappings
+        update_blobs_and_mappings();
+
+        // Reset state
+        _active_elements.clear();
+        _active_group = nullptr;
+    }
+}
+
+bool ISimpleLifetimeManager::are_all_finalized() const
+{
+    return !std::any_of(std::begin(_active_elements), std::end(_active_elements), [](const Element e)
+    {
+        return !e.status;
+    });
+}